TNS-12642: No session key
Cause: A process has no session key associated with it because the authentication service being used does not use one.
Action: If a session key is required, use another authentication service.
Category Archives: TNS Database Error Messages
TNS-12641: Authentication service failed to initialize
TNS-12641: Authentication service failed to initialize
Cause: The authentication service failed during initialization.
Action: Enable tracing to determine the exact error.
TNS-12640: Authentication adapter initialization failed
TNS-12640: Authentication adapter initialization failed
Cause: The function specified in the authentication table entry for the service failed.
Action: Enable tracing to determine the exact error.
TNS-12639: Authentication service negotiation failed
TNS-12639: Authentication service negotiation failed
Cause: No match was found between the types of authentication services that the client supports and those that the server is using.
Action: Possible solutions include: Change the entry in SQLNET.ORA that determines which services are to be used. Relink the client with at least one of the authentication service adapters that the server supports. Relink the server with at least one of the authentication service adapters that the client supports. Disable authentication on both the client and server.
TNS-12638: Credential retrieval failed
TNS-12638: Credential retrieval failed
Cause: The authentication service failed to retrieve the credentials of a user.
Action: Enable tracing to determine the exact error.
TNS-12637: Packet receive failed
TNS-12637: Packet receive failed
Cause: A process was unable to receive a packet from another process. Possible causes include: The other process was terminated. The machine on which the other process is running went down. Some other communications error occurred.
Action: If the cause is not obvious, contact Oracle Support Services.
TNS-12635: No authentication adapters available
TNS-12635: No authentication adapters available
Cause: The executable was not linked with any authentication service adapters but the SQLNET.ORA parameter that determines whether or not authentication is required was set to true.
Action: Either disable the parameter or relink the executable with service adapters.
TNS-12635: No authentication adapters available
TNS-12635: No authentication adapters available
Cause: The executable was not linked with any authentication service adapters but the SQLNET.ORA parameter that determines whether or not authentication is required was set to true.
Action: Either disable the parameter or relink the executable with service adapters.
TNS-12634: Memory allocation failed
TNS-12634: Memory allocation failed
Cause: Process was unable to allocate memory.
Action: Terminate other processes in order to reclaim needed memory.
TNS-12633: No shared authentication services
TNS-12633: No shared authentication services
Cause: The list of authentication services specified by the user does not match those supported by the process.
Action: Either specify another list or relink the executable with the desired services.